ISOPOROUS MESOPOROUS ASYMMETRIC BLOCK COPOLYMER MATERIALS WITH MACROVOIDS AND METHOD OF MAKING THE SAME

ISOPOROUS MESOPOROUS ASYMMETRIC BLOCK COPOLYMER MATERIALS WITH MACROVOIDS AND METHOD OF MAKING THE SAME

A mesoporous isoporous asymmetric material includes at least one diblock or multiblock copolymer, wherein the material has a transition layer having a thickness of at least 300 nm and a low macrovoid density, and the material has a sub-structure adjacent to said transition layer and said sub-structu...

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Hauptverfasser: GU, Yibei, ROBBINS, Spencer, SHETHJI, Jayraj K, DORIN, Rachel M
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PERFORMING OPERATIONS
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creator GU, Yibei
ROBBINS, Spencer
SHETHJI, Jayraj K
DORIN, Rachel M
description A mesoporous isoporous asymmetric material includes at least one diblock or multiblock copolymer, wherein the material has a transition layer having a thickness of at least 300 nm and a low macrovoid density, and the material has a sub-structure adjacent to said transition layer and said sub-structure comprises a high macrovoid density. A method for producing mesoporous isoporous asymmetric materials having macrovoids can include: dissolving at least one diblock or multiblock copolymer in a solution, the solution having one or more solvents and one or more nonsolvents, to form a polymer solution; dispensing the polymer solution onto a substrate or mold, or through a die or template; removing at least a portion of solvent and/or nonsolvent from the polymer solution to form a concentrated polymer solution; and exposing the concentrated polymer solution to a nonsolvent causing precipitation of at least a portion of the polymer from the concentrated polymer solution.
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subjects PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
title ISOPOROUS MESOPOROUS ASYMMETRIC BLOCK COPOLYMER MATERIALS WITH MACROVOIDS AND METHOD OF MAKING THE SAME
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